ããã«ã¡ã¯ãããã©ããã¢ã³ïŒ ä»æ¥ã¯ãã¢ãã®ã€ã³ã¿ãŒãããåãã«éçºãããŠããããŸããŸãªãããã¯ãŒã¯ãã¯ãããžãŒã®èª¬æã«ã€ããŠèª¬æããŸãã
ã¢ãã®ã€ã³ã¿ãŒãããïŒIoTãã¢ãã®ã€ã³ã¿ãŒãããïŒã¯ãèžæ°ãšã³ãžã³ã®çºæãé»åã®å·¥æ¥åã«å¹æµããã次ã®é©åœçãªé£èºã«ãªãã€ã€ãããŸãã ä»æ¥ãããžã¿ã«ãã©ã³ã¹ãã©ãŒã¡ãŒã·ã§ã³ã¯ãçµæžã®æãå€æ§ãªåéãèŠãã身è¿ãªç°å¢ãå€ããŠããŸãã ããã«ããã®ãããªå Žåã«ããçºçããããã«ããããã®å€æã®æçµçãªå¹æã¯ããã¹ã®å é ã«ãããããäºæž¬ãå°é£ã§ãã
éå§ãããããã»ã¹ã¯ãæããã«åäžã§ããããšãã§ãããä»æ¥ãäžéšã®æ¥çã¯ä»ã®æ¥çãããå€åã«å¯Ÿå¿ããŠããŸãã åè ã«ã¯å®¶é»ã茞éãç©æµãéèã»ã¯ã¿ãŒãå«ãŸããåŸè ã«ã¯èŸ²æ¥ãªã©ãå«ãŸããŸãã èå³æ·±ãçµæãçŽæããæåãããã€ããããããžã§ã¯ãããããŸããã
TracoVinoãããžã§ã¯ãã¯ãçŸä»£ãã€ãã§æãå€ãã¯ã€ã³ç£å°ã§ããæåãªã¢ãŒãŒã«æžè°·ã§IoTã䜿çšããæåã®è©Šã¿ã®1ã€ã§ãã ãã®ãœãªã¥ãŒã·ã§ã³ã¯ãåææã®æ œå¹ããç¶è©°ããŸã§ããããŠåã®ãã¹ãŠã®ããã»ã¹ãèªååããã¯ã©ãŠããã©ãããã©ãŒã ã«åºã¥ããŠããŸãã ææ決å®ã«å¿ èŠãªããŒã¿ã¯ãããã€ãã®ã¿ã€ãã®ã»ã³ãµãŒããã·ã¹ãã ã«éãããŸãã 枩床ãåå£æ°Žåãç°å¢ã¢ãã¿ãªã³ã°ã®æ±ºå®ã«å ããŠãæ¥å°éãåå£é žæ§åºŠãããã³ãã®äžã®æ é€çŽ å«æéã決å®ã§ããŸãã ããã¯äœãäžããŸããïŒ TracoVinoã䜿çšãããšãã¯ã€ã³ã¡ãŒã«ãŒã¯ãããŠçã®ç¶æ ã«é¢ããäžè¬çãªã¢ã€ãã¢ãåŸãããšãã§ããã ãã§ãªããç¹å®ã®é åãåæããŠåé¡ãç¹å®ããææã®å¯èœæ§ã«é¢ããæ©æã®æ å ±ãååŸããã¯ã€ã³ã®å質ãšéã«ã€ããŠã®äºæž¬ãåŸãããšãã§ããŸãã
ä»ã«ãããã¯ãŒã¯ã«æ¥ç¶ã§ãããã®ã¯äœã§ããïŒ IoTã䜿çšããããã®æãéçºãããã·ããªãªã«ã¯ãã¹ããŒãã·ãã£ãå«ãŸããŸãã Beecham ResearchãPike ResearchãiSupply Telematicsãããã³ç±³åœé茞çã®ç 究ã«ãããšããããã®ãããžã§ã¯ãã®äžéšãšããŠãçŸåšãäžçäžã§10åãè¶ ããããã€ã¹ããããæ°Žéãéœåžäº€é管çãå ¬è¡è¡çãå®å šã®ããŸããŸãªæ©èœãæ ã£ãŠããŸãã ãããã¯ãé§è»ã¹ããŒã¹ã®äœ¿çšãæé©åããã¹ããŒãé§è»å Žãéœåžã®äœæ°ãæ¶è²»ãã氎質ãç£èŠããã€ã³ããªãžã§ã³ããªçµŠæ°Žã·ã¹ãã ãå¿ èŠãªèŒžéã®åŸ ã¡æéã«é¢ããæ£ç¢ºãªæ å ±ãååŸã§ããã¹ããŒããã¹åãªã©ã§ãã
æ¥çã«ã¯ãã§ã«æ°åå°ã®ããã€ã¹ãæ¥ç¶ãããŠããŸãã ãã®äžã«ã¯ãã¹ããŒããªã¡ã³ããã³ã¹ãšä¿®çã·ã¹ãã ãç©æµãšå®å šãã¹ããŒããªãã³ããã³ã³ãã¬ããµãŒããã«ãããããŸãã ãšãã«ã®ãŒãšãŠãŒãã£ãªãã£ã®åéã«ã¯ãå€æ°ã®ã¡ãŒã¿ãŒãé é»ç¶²ã®èªååèŠçŽ ãæ¶è²»è åãæ©åšãå é»ã€ã³ãã©ãåçå¯èœããã³åæ£ãšãã«ã®ãŒæºã®ã€ã³ãã©ãªã©ãå€æ°ã®ããã€ã¹ãé¢äžããŠããŸãã ãã«ã¹ã±ã¢ã®åéã§ã¯ã蚺æããŒã«ãã¢ãã€ã«ã©ããããŸããŸãªã€ã³ãã©ã³ããé éå»çæ©åšãæ¥ç¶ãããã¢ãã®ã€ã³ã¿ãŒãããã«æ¥ç¶ãããŸãã
ä»åŸæ°å¹Žéã§ããã·ã³æ¥ç¶ã®æ°ã¯å¹Žé25ïŒ å¢å ãã2021幎ãŸã§ã«ãå°çäžã«æ¥ç¶ãããããã€ã¹ã¯280ååã«ãªããšäºæ³ãããŠããŸãã ãããã®ãã¡ãæ £ã芪ããã ãŠãŒã¶ãŒã¬ãžã§ããïŒã¹ããŒããã©ã³ãã¿ãã¬ãããã©ããããããPCïŒããã¯ããã130ååã150åã¯ããŸããŸãªçš®é¡ã®ã»ã³ãµãŒã販売çšç«¯æ«ãè»ããã£ã¹ãã¬ã€ãã€ã³ãžã±ãŒã¿ãŒãªã©ã®ãŠãŒã¶ãŒããã³ç£æ¥çšããã€ã¹ã§æ§æãããŸãã
è¿ãå°æ¥ã®äžèŠå°è±¡çãªæ°åã«ããããããããããã¯æçµçãªãã®ã§ã¯ãããŸããã IoTã¯ã©ãã«ã§ãå®è£ ãããããã«å ã«è¡ãã»ã©ãããã·ã³ãã«ã§è€éãªããã€ã¹ãæ¥ç¶ããå¿ èŠããããŸãã ãã¯ãããžãŒã®çºå±ã«ãããç¹ã«2020幎以éã®5Gãããã¯ââãŒã¯ã®ç«ã¡äžãã®åœ±é¿ã«ãããæ¥ç¶ããã€ã¹ã®æ°ã¯æ¥éã«å¢å ããããã«500åã«è¿ã¥ããŸãã
æ¥ç¶ã®å€§èŠæš¡ãªæ§è³ªãšããŸããŸãªäœ¿çšã·ããªãªã«ãããæãåºç¯å²ã®IoTãããã¯ãŒã¯ãã¯ãããžãŒã®èŠä»¶ã決ãŸããŸãã ããŒã¿è»¢éé床ãé 延ãäŒéã®ä¿¡é Œæ§ïŒä¿èšŒïŒã¯ãç¹å®ã®ã¢ããªã±ãŒã·ã§ã³ã®æ©èœã«ãã£ãŠæ±ºãŸããŸãã ããã«ãããããããIoTã®ãããã¯ãŒã¯ãã¯ãããžãŒãšåŸæ¥ã®ã¢ãã€ã«ãããã¯ãŒã¯ãšã®éããåå¥ã«æ€èšããå¿ èŠãããå€ãã®äžè¬çãªã¿ãŒã²ããããããŸãã
ãŸãããšã³ãããã€ã¹ã«ãããã¯ãŒã¯ãã¯ãããžãŒãå®è£ ããã³ã¹ãã¯ãæãæé ãªã¯ã©ã¹ã§ãã£ãŠããã¹ããŒããã©ã³ãã¢ãã ã®è£œé ã«äœ¿çšãããŠããæ¢åã®GSM / WCDMA / LTEã¢ãžã¥ãŒã«ãããæ°åäœãããå¿ èŠããããŸãã æ¥ç¶ããã€ã¹ã®å€§éå°å ¥ã劚ããçç±ã®1ã€ã¯ããããã»ããã®ã³ã¹ããé«ãããšã§ããããã¯ãã»ãšãã©ã®IoTã·ããªãªã§ã¯äžèŠãªé³å£°äŒéããã®ä»ã®å€ãã®æ©èœãå«ããããã¯ãŒã¯ãã¯ãããžãŒã®å®å šãªã¹ã¿ãã¯ãå®è£ ããŸãã
ããã«é¢é£ä»ããããŠããŸãããåå¥ã«çå®ãããèŠä»¶ã¯ãäœæ¶è²»é»åãšé·ãããããªå¯¿åœã§ãã å€ãã®IoTã·ããªãªãšã¢ããªã±ãŒã·ã§ã³ã«ã¯ãå èµããããªãŒããã®æ¥ç¶ããã€ã¹ã®èªåŸçãªé»æºäŸçµŠãå«ãŸããŸãã ãããã¯ãŒã¯ã¢ãžã¥ãŒã«ã®ç°¡çŽ åãšãšãã«ã®ãŒå¹çã®é«ãèšèšã«ããã5 W * hã®ããããªãŒå®¹éã§æ倧10幎ã®ããããªãŒå¯¿åœãå¯èœã§ãã ç¹ã«ããã®ãããªã€ã³ãžã±ãŒã¿ã¯ãéä¿¡ãããããŒã¿ã®éãæžãããããã€ã¹ãæ å ±ãéåä¿¡ãããå®éã«é»åãæ¶è²»ããªããç¡é³ãã®æéãé·ãããããšã§å®çŸã§ããŸãã ãã ããç¹å®ã®ã¡ã«ããºã ã®å®è£ ã¯ããã¯ãããžãŒããšã«ç°ãªããŸãã
ãããã¯ãŒã¯ã«ãã¬ããžã¯ãã¬ãã¥ãŒãå¿ èŠãªãã1ã€ã®æ©èœã§ãã ä»æ¥ãã¢ãã€ã«ãããã¯ãŒã¯ã®ã«ãã¬ããžã¯ãå±å ãå«ãéèœã§ããªãå®å®ããããŒã¿è»¢éãæäŸããŸãã ãã ããæ¥ç¶ãããããã€ã¹ã¯ã人ãã»ãšãã©ããªãå Žæã«ãé 眮ã§ããŸãïŒé éå°ãé·ãç·è·¯ãåºå€§ãªè²¯æ°Žæ± ãå°äžå®€ãæç±ãããã³ã³ã¯ãªãŒããšéå±ã®ç®±ããšã¬ããŒã¿ã·ã£ãããã³ã³ãããªã©ã®è¡šé¢ IoTåžå Žåå è ã®å€§å€æ°ã«ãããšããã®åé¡ã解決ããããã®ç®æšåºæºç¹ã¯ãä»æ¥ã®ã¢ãã€ã«ãã¯ãããžãŒã®ã«ãã¬ããžã®ãªãŒããŒã§ããåŸæ¥ã®GSMãããã¯ãŒã¯ãšæ¯èŒããŠãã©ã€ã³ããžã§ããã20 dBæ¹åããããšã§ãã
ããŸããŸãªæ¥çã§ã¢ãã®ã€ã³ã¿ãŒãããã䜿çšããããŸããŸãªã·ããªãªã¯ããŸã£ããç°ãªãéä¿¡èŠä»¶ãæå³ããŸãã ãŸããæ¥ç¶ãå¿ èŠãšããããã€ã¹ã®æ°ã®èŠ³ç¹ãããããã¯ãŒã¯ãè¿ éã«æ¡åŒµã§ãããšããã ãã§ã¯ãããŸããã ç§ãã¡ã説æãããã¹ããŒããããŠåãã®äŸã«éåžžã«åçŽãªã»ã³ãµãŒãå€æ°å«ãŸããŠããå Žåãç£æ¥äŒæ¥ã§ã¯ãç¹å®ã®ç°å¢ãã©ã¡ãŒã¿ãŒãä¿®æ£ããã ãã§ãªããã¢ã¯ã·ã§ã³ãå®è¡ããéåžžã«è€éãªãããããæ¥ç¶ãããŸãã å¥åº·ã®åéãç¹ã«é éå»ççšã®æ©åšã«ã€ããŠæãåºãããšãã§ããŸãã ãªã¢ãŒã蚺æãè€éãªå»çæäœã®ç£èŠããªã¢ã«ã¿ã€ã ãããªéä¿¡ã䜿çšãããªã¢ãŒããã¬ãŒãã³ã°çšã«èšèšããããããã®è€åäœã®äœ¿çšã¯ãä¿¡å·é 延ãããŒã¿äŒéãä¿¡é Œæ§ãå®å šæ§ã«é¢ããŠãŸã£ããç°ãªãèŠä»¶ãééããªãæ瀺ããŸãã
IoTãã¯ãããžãŒã¯ã䜿çšã·ããªãªã«å¿ããŠããŸããŸãªãããã¯ãŒã¯ç¹æ§ãæäŸããæ°åããæ°çŸã®ç°ãªãã¿ã€ãã®ãããã¯ãŒã¯ãã©ãã£ãã¯ã«åªå é äœãä»ããçµæžå¹çãç¶æããããã«ãããã¯ãŒã¯ãªãœãŒã¹ã®æé©ãªåå²ãåœãŠãè¡ãã®ã«ååãªæè»æ§ãå¿ èŠã§ãã äœçŸäžãã®æ¥ç¶ãããããã€ã¹ãå€æ°ã®ãŠãŒã¹ã±ãŒã¹ãæè»ãªç®¡çãšå¶åŸ¡-ãããã¯ãã¹ãŠåäžã®ãããã¯ãŒã¯å ã«å®è£ ããå¿ èŠããããŸãã
ã¯ã€ã€ã¬ã¹ããŒã¿éä¿¡ã®åéã«ãããè¿å¹Žã®å€ãã®éçºã¯ãæ¢åã®ãããã¯ãŒã¯ã¢ãŒããã¯ãã£ãšãããã³ã«ãé©å¿ãããããšãã欲æ±ãšããŒãããã®æ°ããã·ã¹ãã ãœãªã¥ãŒã·ã§ã³ã®äœæã®äž¡æ¹ã«é¢é£ãããããã®åé¡ã®è§£æ±ºã«è²»ããããŠããŸãã äžæ¹ã§ã¯ãåäžã®éšå±ãŸãã¯éãããé åå ã§IoTéä¿¡ã®ã¿ã¹ã¯ãéåžžã«ããŸã解決ãããããããããã£ãã©ãªãŒãœãªã¥ãŒã·ã§ã³ãããããŸãã ãã®ãããªãœãªã¥ãŒã·ã§ã³ã«ã¯ãWi-FiãBluetoothãZ-WaveãZigbeeãããã³çŸåšäººæ°ã®ããå€ãã®ã¢ããã°ãå«ãŸããŸãã
äžæ¹ãææ°ã®ã¢ãã€ã«ãã¯ãããžãŒã¯ãæããã«ãé©åã«ç®¡çãããã€ã³ãã©ã¹ãã©ã¯ãã£ã®ã«ãã¬ããžãšã¹ã±ãŒã©ããªãã£ãæäŸãããšããç¹ã§ç«¶åããŠããŸããã ãšãªã¯ãœã³ã¢ããªãã£ã¬ããŒãã«ãããšãGSMã®ã«ããŒçã¯äžç人å£ã®90ïŒ ãWCDMAããã³LTEãããã¯ãŒã¯ã¯ãããã65ïŒ ããã³40ïŒ ã§ããããããã¯ãŒã¯ã®æ§ç¯ã掻çºã«é²è¡ããŠããŸãã ã¢ãã€ã«éä¿¡æšæºãç¹ã«3GPPãªãªãŒã¹13ä»æ§ã®éçºã®äžç°ãšããŠè¡ãããæé ã¯ãã°ããŒãã«ãªãšã³ã·ã¹ãã ã䜿çšããå©ç¹ãç¶æããªãããIoTã¿ãŒã²ãããæ£ç¢ºã«éæããããšãç®çãšããŠããŸãã ãããã®æè¡ã®é²åã¯ã第5äžä»£ïŒ5GïŒãããã¯ãŒã¯æšæºãå«ãã¢ãã€ã«éä¿¡æšæºã®å°æ¥ã®ä¿®æ£ã®åºç€ãšãªããŸãã
å èš±äžèŠåšæ³¢æ°ã¹ãã¯ãã«çšã®ä»£æ¿äœé»åæè¡ã¯ãäžè¬ã«ãããçãã¢ããªã±ãŒã·ã§ã³ã察象ãšããŠããŸãã æ°ããã€ã³ãã©ã¹ãã©ã¯ãã£ãäœæããå¿ èŠæ§ãšæè¡ã®ç·å¯ããããã®ãããªã·ã¹ãã ã®æ®åãèãã劚ããŠããŸãã
3GPP Release 13å§åã®ææ°çã«å«ãŸããããã«å®çŸ©ãããŠããã¢ãã€ã«éä¿¡æšæºã®æ¡åŒµæ©èœã«ã€ããŠèããŠã¿ãŸãããã
EC-GSM
GSMæè¡ãéçºããGERANã¯ãŒãã³ã°ã°ã«ãŒãã¯ãEC-GSMïŒååã®ããªã¢ã³ãïŒEC-GPRSãEC-GSM-IoTïŒãšåŒã°ããé«åºŠãªæ©èœã®ããã±ãŒãžãææ¡ããŠããŸãã ãã®ãã¯ãããžãŒã¯ãããŒã¹GSM / GPRS / EDGEã«æ¯ã¹ãŠæ¯èŒçå°ããªå€æŽãæäŸããŸããããã«ãããããŒããŠã§ã¢ã亀æãŸãã¯ã¢ããã°ã¬ãŒãããããšãªãããã®æšæºã®ã€ã³ã¹ããŒã«æžã¿ããŒã¹ã¹ããŒã·ã§ã³ã®å€§åã䜿çšã§ããŸãã
äž»ãªç¹åŸŽã¯æ¬¡ã®ãšããã§ãã
å®éãæšæºã®GSM / GPRSãã£ãªã¢ã䜿çšãããåç·ã®äºç®ãå¢ãããããã€ã¹ã®æ°ãå¢ããããšã³ãããã€ã¹ã«ãã¯ãããžãŒãå®è£ ããã³ã¹ããåæžããããã®å€æŽãå ããããŠããŸãã
å°å ¥ãããäž»ãªå€æŽïŒ
1ïŒ GSMããã³çé»åã¢ãŒãïŒPSM ïŒã®æ¡åŒµDRXïŒeDRXãæ¡åŒµäžé£ç¶åä¿¡ïŒ -å¿ é ä¿¡å·ã®é »åºŠãæžãããæ å ±ã®åä¿¡ãšåä¿¡ã®ééãæé©åããæ倧52åéã®ãç¡é³ãã®é·æéããµããŒãããŸããããã€ã¹ã¯ãæ å ±ãéåä¿¡ããã«ãããã¯ãŒã¯ã«æ¥ç¶ããããŸãŸã§ãã
2ïŒ æ¡åŒµã«ãã¬ããž -ãããã¯ãŒã¯ã®ããŒã¿ãªã³ã¯ã¬ã€ã€ãŒã®é©å¿ãç¹ã«éä¿¡ãããæ å ±ã®ç¹°ãè¿ãã䜿çšããŠãåŸæ¥ã®ã·ã¹ãã ã«æ¯ã¹ãŠã«ãã¬ããžã20 dBæ¹åããŸãã
3ïŒ ãã®ä»ã®æ¹å ïŒãããã¯ãŒã¯ã·ã°ããªã³ã°ã®ç°¡çŽ åïŒWCDMA / LTEãããã¯ãŒã¯ãšã®ã³ã©ãã¬ãŒã·ã§ã³ãæäŸããã·ã°ããªã³ã°ã®äžéšã®ãµããŒããæåŠïŒã èªèšŒã¡ã«ããºã ããã³æ¥ç¶ã»ãã¥ãªãã£ã®æ¡åŒµãªã©ã
EC-GSMã®äž»ãªå©ç¹ã¯ããããã¯ãŒã¯ã€ã³ãã©ã¹ãã©ã¯ãã£ã®å¯çšæ§ïŒã»ãšãã©ã®å Žåããããã¯ãŒã¯ããŒãã§ã®ãœãããŠã§ã¢ã®æŽæ°ã®ã¿ãå¿ èŠã§ãïŒãããã³GSMãããã¯ãŒã¯ã®æ®åãšãã®ã«ãã¬ããžã§ãã
eMTC
eMTCããªã¢ã³ãïŒLTE-MãLTE Cat.M1ãšãåŒã°ããïŒã¯ãLTEãããã¯ãŒã¯çšã®IoTã®é©å¿ã§ãã ãªãã¬ãŒã¿ãŒãå©çšã§ãããããã¯ãŒã¯ã€ã³ãã©ã¹ãã©ã¯ãã£ãšã®æ倧ã®äºææ§ã確ä¿ããªããã倧éã®IoTã¿ãŒã²ããïŒã³ã¹ããã«ãã¬ããžãããããªãŒå¯¿åœïŒãéæããããšã«åŒãç¶ãçŠç¹ã眮ãããŠããŸãã
eMTCãã¯ãããžãŒã®éèŠãªéãã¯ãé«åž¯åå¹ ã§ãããåæ¹åïŒãµãã¹ã¯ã©ã€ããŒãããµãã¹ã¯ã©ã€ããŒïŒã§æ倧1 Mbpsã§ãã èšäºã®åé ã§åãäžããããŸããŸãªIoT䜿çšã·ããªãªãæãåºããŠãã ããã å Žåã«ãã£ãŠã¯ããã®ãããªããŒã¿ã¬ãŒããæããã«å¿ èŠã«ãªããŸãã
eMTCã¯ãéèŠããããã¢ãã€ã«ãããŒããã³ãã¢ã¯ã»ã¹ãããã¯ãŒã¯ïŒISMïŒã§åºã䜿çšãããŠããããIoTããã€ã¹ã倧éã«æ¥ç¶ãããšåé·ã«ãªãLTEæ©èœã®æåŠã«ãããæçµçãªIoTããã€ã¹ã®ã³ã¹ããåæžããããã«èšèšãããŠããŸãã ããã¯ãIoTåãã®LTE Cat.0ãå®çŸ©ãã以åã®ä»æ§ãªãªãŒã¹ïŒãªãªãŒã¹12ïŒã§3GPPãå§ããäœæ¥ã®ç¶ãã§ãã EMTCã¯ãLTEçšã®æ¡åŒµDRXããã³PSMã¡ã«ããºã ãè¿œå ããŸãããããã«ãããEC-GSMã®å Žåãšåãæ¹æ³ã§æ¶è²»é»åãåæžããåé¡ã解決ãããŸãã
EC-GSMãšåæ§ã«ãeMTCã¯é«åºŠãªãããã¯ãŒã¯ã€ã³ãã©ã¹ãã©ã¯ãã£ã®å¯çšæ§ãåããŠããããœãããŠã§ã¢ãæŽæ°ããããšã§æ¢åã®LTEãããã¯ãŒã¯ã«å±éã§ããŸãã ããã«ãISPTãšIoTãããã¯ãŒã¯ã¯å ±åããæ¥ç¶ãããããã€ã¹ã®çš®é¡ãšæ°ãããã³ãããã«ãã£ãŠäœæããããã©ãã£ãã¯ã«å¿ããŠã䜿çšããããªãœãŒã¹ïŒåšæ³¢æ°ã¹ãã¯ãã«ãåºå°å±ã®èšç®èœåãªã©ïŒãåçã«åé åã§ããŸãã
NB-IoT
ãããŒãã³ãIoTïŒãããŒãã³ãIoTïŒã¯ããããã¯ãŒã¯IoTãã¯ãããžãŒã®éçºã«ãããæ¯èŒçæ°ããæ¹åæ§ã§ããããã®äœ¿çšã«ããLTEãšã®å¯æ¥ãªçžäºäœçšãšçµ±åãæäŸããããšããäºå®ã«ãããããããç§ãã¡ã¯ãŸã æ°ããã¿ã€ãã®ç¡ç·ã¢ã¯ã»ã¹ã®äœæã«ã€ããŠè©±ãåã£ãŠããŸããå©çšå¯èœãªæè¡ã
ãªã³ã¯ã¬ã€ã€ãŒãããã³ã«ã®å€§å¹ ãªåèšèšã«ãããCat.M1 LTEãšæ¯èŒããŠNB-IoTããã€ã¹ã®ã³ã¹ãã90ïŒ åæžããããšäºæ³ãããŸãã ãããã¯ãŒã¯æ©åšãå å ¥è ã¢ãžã¥ãŒã«ã®å€ãã®ã¡ãŒã«ãŒã¯ããšãªã¯ãœã³ãHuaweiãããã¢ãã€ã³ãã«ãã¯ã¢ã«ã³ã ã®ã»ããVodafoneãDeutsche TelekomãChina Unicomãªã©ã®äž»èŠãªéä¿¡äºæ¥è ãšåæ§ãNB-IoTãã¯ãããžãŒã®ãµããŒããæ¢ã«è£œåã§çºè¡šããŠããŸãã
ãããã£ãŠãä»å¹Ž6æã«äºå®ãããŠããEC-GSMãeMTCãããã³NB-IoTã®ä»æ§ã®æçµããŒãžã§ã³ã®æ¡çšã«ãããåžå Žåå è ã¯IoTãããã¯ãŒã¯éçºã®ããã®3ã€ã®å¹æçãªããŒã«ãèªç±ã«äœ¿çšã§ããããã«ãªããŸãã ãããã®ããããã«ã¯ãç¹å®ã®äœ¿çšã·ããªãªãšãããããå±éãããã¢ãã€ã«ãããã¯ãŒã¯ã®ç¹æ§ã«å¿ããŠãç¬èªã®ç¹æ§ãšå©ç¹ããããŸãã ãã ãããããã«ããŠããã°ããŒãã«ãšã³ã·ã¹ãã ã®å©ç¹ãå±éããããããã¯ãŒã¯ãšITã€ã³ãã©ã¹ãã©ã¯ãã£ã®å¯çšæ§ãšå¯çšæ§ãããã³ä¿è·ãããïŒã©ã€ã»ã³ã¹ãããïŒåšæ³¢æ°ã¹ãã¯ãã«ã®äœ¿çšã¯ãå®è£ ãšéçšã®ã³ã¹ããåæžããã®ã«åœ¹ç«ã¡ãŸãã ããã¯ãè¿ãå°æ¥ããããžã§ã¯ãã®ççºçãªæé·ãæåŸ ãããããšãæå³ããŸãã
ããã§ç§ãã¡ã®è©±ã¯çµããã§ããHabrachiansã®æ³šç®ã«æè¬ããŸãïŒ æ¬¡ã®æçš¿ã§ã¯ãNB-IoTãã¯ãããžãŒã®æè¡çåŽé¢ã«çŠç¹ãåœãŠãŸãã